Solarbayer PROMATIC D10 Bedienungsanleitung Seite 55

Switchover from solid fuel boiler or heat accumulator to liquid fuel boiler
If the heat source B temperature drops below the minimum heat source B temperature -
parameter S5.8 or S5.10 (represented with the line MT - point 3), the delay countdown is
started (1.6 to max 60 minutes), which depends on the heating demands. After the count-
down, the heat source A is switched on again (point 4). The activation of the heat source
A can occur faster (point 4'), if the heat source B for a defined time (depends on parame-
ter S5.12 setting), cannot provide for the demanding amount of heat (point 3').
When the heat source A temperature exceeds the heat source B temperature for 6 K, the
switchover valve turns to the heat source A (point 5).
55 Service settings manual